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Analog Devices Semiconductor Electronic Components Datasheet

AD75004 Datasheet

Quad 12-Bit D/A Converter

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a
Quad 12-Bit
D/A Converter
AD75004
FEATURES
4 Complete 12-Bit D/A Functions
Double-Buffered Latches
Simultaneous Update of All DACs Possible
؎5 V Output Range
High Stability Bandgap Reference
Monolithic BiMOS Construction
Guaranteed Monotonic over Temperature
3/4 LSB Linearity Guaranteed over Temperature
4 s max Settling Time to 0.01%
Operates with ؎12 V Supplies
Low Power: 720 mW max Including Reference
TTL/5 V CMOS Compatible Logic Inputs
8-Bit Microprocessor Interface
24-Pin PDIP or 28-Lead PLCC Package
PRODUCT DESCRIPTION
The AD75004 contains four complete, voltage output, 12-bit
digital-to-analog converters, a high stability bandgap reference,
and double-buffered input latches on a single chip. The convert-
ers use 12 precision high speed bipolar current steering switches
and laser-trimmed thin-film resistor networks to provide fast
settling time and high accuracy.
Microprocessor compatibility is achieved by the on-chip
double-buffered latches. The design of the input latches allows
direct interface to 8-bit buses. The 12 bits of data from the first
rank of latches can then be transferred to the second rank,
avoiding generation of spurious analog output values. The latch
responds to strobe pulses as short as 50 ns, allowing use with
fast microprocessors.
The functional completeness and high performance of the
AD75004 results from a combination of advanced switch de-
sign, the BiMOS II fabrication process, and proven laser trim-
ming technology. BiMOS II is an epitaxial BiCMOS process
optimized for analog and converter functions. The AD75004 is
trimmed at the wafer level and is specified to ± 1/2 LSB maxi-
mum linearity error at 25°C and ± 3/4 LSB over the full operat-
ing temperature range. The on-chip output amplifiers provide
an output range of ± 5 V, with 1 LSB equal to 2.44 mV.
FUNCTIONAL BLOCK DIAGRAM
V REFOUT
V REFIN
+5V
2.22k
VOLTAGE
REFERENCE
INPUT
LATCHES
8 + 4-BIT
LATCHES
DAC
LATCHES
12-BIT
LATCH
12-BIT
DAC
D7
D6
D5 TTL
D4 INPUTS
D3 8-BIT
D2 BUS
D1
D0
8 + 4-BIT
LATCHES
12-BIT
LATCH
12-BIT
DAC
8 + 4-BIT
LATCHES
12-BIT
LATCH
12-BIT
DAC
10k
VOUT3
10k
VOUT2
10k
VOUT1
8 + 4-BIT
LATCHES
12-BIT
LATCH
CONTROL LOGIC
TTL INPUTS
12-BIT
DAC
10k
VOUT0
AD75004
+12V
–12V
V DD
VSS
AGND
DGND
CS WR A3 A2 A1 A0
The bandgap reference on the chip has low noise, long term
stability and temperature drift characteristics comparable to
discrete reference diodes. The absolute value of the reference is
laser trimmed to +5.00 V with 0.6% maximum error. Its tem-
perature coefficient is also laser trimmed.
Typical full-scale gain TC is 15 ppm/°C. With guaranteed
monotonicity over the full temperature range, the AD75004 is
well suited for wide temperature range performance.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703


Analog Devices Semiconductor Electronic Components Datasheet

AD75004 Datasheet

Quad 12-Bit D/A Converter

No Preview Available !

AD75004–SPECIFICATIONS (TA = +25؇C, ؎12.0 V power supplies unless otherwise noted)
Parameter
Symbol
Min
Typ
Max
Units
DIGITAL INPUTS (D0–D7, A0–A3, CS, WR)
Logic Levels (TTL Compatible)
Input Voltage, Logic “1”
Input Voltage, Logic “0”
Input Current, VIH = 5.5 V
Input Current, VIL = 0.8 V
Input Capacitance
ACCURACY
Resolution
Integral Linearity Error
Integral Linearity Error, TMIN to TMAX
Differential Linearity Error
Differential Linearity Error, TMIN to TMAX
Gain (Full-Scale) Error1
Gain Error Drift, TMIN to TMAX1
Bipolar Zero Error1
Bipolar Zero Error Drift, TMIN to TMAX1
CHANNEL-TO-CHANNEL MISMATCH
Integral Linearity Error
Gain Error1
Bipolar Zero Error1
VIH
VIL
IIH
IIL
CIN
2.0 5.5
0 0.8
10
10
10
12
± 1/4 ؎1/2
± 1/2 ± 3/4
± 1/2 ؎3/4
Guaranteed Monotonic
± 2 ؎10
± 15 ± 30
± 1 ؎2
±3 ±7
± 1/2 ؎1
± 1 ؎4
± 1 ؎2
V
V
µA
µA
pF
Bits
LSB
LSB
LSB
LSB
ppm/°C
LSB
ppm/°C
LSB
LSB
LSB
DYNAMIC PERFORMANCE
Settling Time to ± 0.01% of FSR
for FSR Change, 2 kΩ || 500 pF Load
Slew Rate, 2 kΩ || 500 pF Load
Digital Input Crosstalk (Static)2
2 4 µs
5 V/µs
–50 dB
ANALOG OUTPUTS
Full-Scale Range (FSR)
Output Current
Short Circuit Limit Current
VOUT
±5
V
IOUT
±5
mA
؎40 mA
VOLTAGE REFERENCE
Reference Output Voltage
Temperature Coefficient
Reference Output Currents3
Reference Input Voltage
Reference Input Current @ 5.0 V
POWER SUPPLY GAIN SENSITIVITY
Gain/VDD, VDD = +10.8 to +13.2 V dc1
Gain/VSS, VSS = –10.8 to –13.2 V dc1
POWER SUPPLY REQUIREMENTS
Voltage Range
Supply Currents
TEMPERATURE RANGE
Specification
Storage
VREFOUT
VREFIN
IREFIN
4.97
3.0
4.5
VDD, VSS
IDD, ISS
؎10.8
TMIN, TMAX
0
–65
5.00
± 15
5.0
5.0
± 15
± 15
± 12
± 25
5.03
± 25
5.5
3.0
؎25
؎25
؎13.2
؎30
+70
+150
V
ppm/°C
mA
V
mA
ppm of FSR/%
ppm of FSR/%
V
mA
°C
°C
NOTES
1Gain and bipolar zero errors are measured using internal voltage reference and include its errors.
2Digital crosstalk is defined as the change in any one output’s steady state value as a result of any other output being driven from VOUTMIN to VOUTMAX into a
2 kΩ || 500 pF load by means of varying the digital input code.
3The internal voltage reference is intended to drive on-chip only; buffer it if using it externally.
4All minimum and maximum specifications are guaranteed, and specifications shown in boldface are tested on all production units at final electrical test. Results from
those tests are used to calculate outgoing quality levels.
Specifications subject to change without notice.
–2– REV. A


Part Number AD75004
Description Quad 12-Bit D/A Converter
Maker Analog Devices
Total Page 4 Pages
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